TrustedHTML.fromLiteral is exposed in workers but assumes the current global is a Window

[Ms2ger]

In https://w3c.github.io/trusted-types/dist/spec/#abstract-opdef-create-a-trusted-type-from-literal , TrustedHTML is special-cased to do

Let templateNode be the results of creating an element given "template", the HTML namespace and current global object's associated Document.

but the current global could be a worker global.

[lukewarlow]

In this case specifically for the TrustedHTML type Chromium throws an InvalidStateError.

LocalDOMWindow* window = LocalDOMWindow::From(script_state);
if (!window) {
    exception_state.ThrowDOMException(DOMExceptionCode::kInvalidStateError,
                                      "Cannot find current DOM window.");
    return nullptr;
}

We could spec this but it feels like the function just shouldn't be exposed for workers in this case? So the IDL could be changed to:

[Exposed=(Window,Worker)]
interface TrustedHTML {
  stringifier;
  DOMString toJSON();
  [Exposed=Window] static TrustedHTML fromLiteral(object templateStringsArray);
};